# Planck data rule out enormous primordial black holes as major dark matter source

Source: [Nanowerk Nanotechnology and Emerging Technologies News](https://www.nanowerk.com/news2/space/newsid=70559.php?utm_source=rss&utm_medium=rss) · 2026-11-06 · Physics
Page: https://themorning.science/story/planck-data-rule-out-enormous-primordial-black-holes-as-major-dark-matter-source-5aa7b6234a838eb8

An analysis of Planck's cosmic microwave background observations finds no signature of extremely massive primordial black holes, excluding them as a significant component of dark matter.

## Coverage

- [Planck data rule out enormous primordial black holes as major dark matter source](https://www.nanowerk.com/news2/space/newsid=70559.php?utm_source=rss&utm_medium=rss) — Nanowerk Nanotechnology and Emerging Technologies News, 2026-11-06

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